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This commit is contained in:
ccolin 2022-02-09 16:24:57 +01:00
parent c953cf6f6c
commit 65fd6f4b6a
3 changed files with 45 additions and 38 deletions
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15
CMakeLists.txt
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@ -7,4 +7,17 @@ add_subdirectory(external/vtk)
add_executable(pfe)
target_sources(pfe PRIVATE src/main.cc)
target_link_libraries(pfe PRIVATE VTK::CommonCore VTK::ViewsCore VTK::RenderingCore VTK::IOCore VTK::FiltersCore VTK::CommonColor VTK::GUISupportQt VTK::RenderingQt VTK::ViewsQt)
target_link_libraries(pfe PRIVATE
VTK::CommonCore
VTK::ViewsCore
VTK::RenderingCore
VTK::IOCore
VTK::FiltersCore
VTK::CommonColor
VTK::GUISupportQt
VTK::RenderingQt
VTK::ViewsQt
VTK::RenderingVolume
VTK::CommonDataModel
VTK::IOLegacy
VTK::IOXML)

60
src/main.cc
View File

@ -8,61 +8,55 @@
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkVolumeMapper.h>
#include <vtkVolume.h>
#include <vtkProjectedTetrahedraMapper.h>
#include <vtkDataSetReader.h>
#include <vtkPolyDataReader.h>
#include <vtkXMLPolyDataReader.h>
#include <array>
int main(int, char*[]) {
int main(int argc, char **argv) {
if (argc != 2) {
std::cerr << "Usage: " << argv[0] << " FILE.vtk" << std::endl;
return EXIT_FAILURE;
}
vtkNew<vtkNamedColors> colors;
// Set the background color.
std::array<unsigned char, 4> bkg{{26, 51, 102, 255}};
colors->SetColor("BkgColor", bkg.data());
// This creates a polygonal cylinder model with eight circumferential facets
// (i.e, in practice an octagonal prism).
vtkNew<vtkCylinderSource> cylinder;
cylinder->SetResolution(8);
vtkNew<vtkXMLPolyDataReader> reader;
reader->SetFileName(argv[1]);
// The mapper is responsible for pushing the geometry into the graphics
// library. It may also do color mapping, if scalars or other attributes are
// defined.
vtkNew<vtkPolyDataMapper> cylinderMapper;
cylinderMapper->SetInputConnection(cylinder->GetOutputPort());
// vtkNew<vtkProjectedTetrahedraMapper> volumeMapper;
// volumeMapper->SetInputConnection(reader->GetOutputPort());
vtkNew<vtkPolyDataMapper> mapper;
mapper->SetInputConnection(reader->GetOutputPort());
// The actor is a grouping mechanism: besides the geometry (mapper), it
// also has a property, transformation matrix, and/or texture map.
// Here we set its color and rotate it around the X and Y axes.
vtkNew<vtkActor> cylinderActor;
cylinderActor->SetMapper(cylinderMapper);
cylinderActor->GetProperty()->SetColor(
// vtkNew<vtkVolume> volume;
// volume->SetMapper(volumeMapper);
vtkNew<vtkActor> actor;
actor->SetMapper(mapper);
actor->GetProperty()->SetColor(
colors->GetColor4d("Tomato").GetData());
cylinderActor->RotateX(30.0);
cylinderActor->RotateY(-45.0);
actor->RotateX(30.0);
actor->RotateY(-45.0);
// The renderer generates the image
// which is then displayed on the render window.
// It can be thought of as a scene to which the actor is added
vtkNew<vtkRenderer> renderer;
renderer->AddActor(cylinderActor);
renderer->AddActor(actor);
renderer->SetBackground(colors->GetColor3d("BkgColor").GetData());
// Zoom in a little by accessing the camera and invoking its "Zoom" method.
renderer->ResetCamera();
renderer->GetActiveCamera()->Zoom(1.5);
// The render window is the actual GUI window
// that appears on the computer screen
vtkNew<vtkRenderWindow> renderWindow;
renderWindow->SetSize(300, 300);
renderWindow->AddRenderer(renderer);
renderWindow->SetWindowName("Cylinder");
// The render window interactor captures mouse events
// and will perform appropriate camera or actor manipulation
// depending on the nature of the events.
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
renderWindowInteractor->SetRenderWindow(renderWindow);
// This starts the event loop and as a side effect causes an initial render.
renderWindow->Render();
renderWindowInteractor->Start();